{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2740800cfe6514d2362a7ef5de2836be1f7e3a2245e4bd8cf7ee845e9bd9b4a3",
    "signature": "0x1b6772b99d94d3e3a7b15ba66b77bd4a8dba68865e6fb56d5d59171a297a4ab973d8c7c53ccd68a02a75156e66f8c8006d4f1055ca4994d70e4a7c07165722b61b",
    "signer": "0x452136c9843a1ab72B758B9cAb217BEff858Ab77",
    "userId": "825636807"
  }
}